October 21, 2025 06:00
Reducing abuse of Microsoft 365 Exchange Online’s Direct Send
Cisco Talos has observed increased activity by malicious actors leveraging Direct Send as part of phishing campaigns. Here's how to strengthen your defenses.
August 29, 2023 08:00
What's in a name? Strange behaviors at top-level domains creates uncertainty in DNS
Confusion over whether some name is a public DNS name or another private resource can cause sensitive data to fall into the hands of unintended recipients.
December 13, 2022 15:30
HTML smugglers turn to SVG images
* HTML smuggling is a technique attackers use to hide an encoded malicious script within an HTML email attachment or webpage. * Once a victim receives the email and opens the attachment, their browser decodes and runs the script, which then assembles a malicious payload directl